squid access denied 求救~~

[tangxiuhe]

我的配置如下：

http_port 80 vhost
visible_hostname xx.com
cache_peer localhost parent 81 0 proxy-only originserver name=b
cache_peer_domain b xx.com
# acl all src 0.0.0.0/0.0.0.0
# http_access allow all
# never_direct allow all
# cache_peer_access b allow all

请教各位大虾，我这样配置老是access denied，将那些注释的打开，又出现警告，说要remove 0.0.0.0/0.0.0.0 才行，怎么办啊，老板要求礼拜六搞定，救命啊~~